CN113233347B - Stable fixing device of large tower crane base - Google Patents
Stable fixing device of large tower crane base Download PDFInfo
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- CN113233347B CN113233347B CN202110512849.7A CN202110512849A CN113233347B CN 113233347 B CN113233347 B CN 113233347B CN 202110512849 A CN202110512849 A CN 202110512849A CN 113233347 B CN113233347 B CN 113233347B
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- sliding
- tower crane
- elastic
- fixing seat
- attaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a stable fixing device of a large tower crane base, which comprises a fixing seat and a base, wherein the fixing seat is formed by extending from the bottom end of a tower crane, and the base is used for mounting the fixing seat; the base is longitudinally provided with a mounting groove, the fixing seat is movably nested in the mounting groove, and a disassembly fixing structure used for tightly holding the fixing seat through the expansion or contraction action of the fixing seat or releasing the fixing seat in a sticking way is mounted in the mounting groove. According to the tower crane fixing seat and the tower crane fixing seat mounting method, the base with larger size and the mounting groove are preset, so that a gap exists between the tower crane fixing seat to be mounted and the mounting groove, the tower crane with larger size can be adapted through the gap, the tower crane is locked through expansion of the dismounting fixing structure, the scheme is that only the dismounting fixing structure is required to be contracted to the original state when the locking of the tower crane is released through a special locking mode of the dismounting fixing structure, and the scheme has the characteristic of convenience in dismounting and mounting.
Description
Technical Field
The invention relates to the technical field of tower cranes, in particular to a stable fixing device for a large tower crane base.
Background
The tower crane is the most common hoisting equipment in construction sites, and is also called as a tower crane, which is lengthened section by section and used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction. The tower crane is an indispensable device on a construction site. The tower crane tip has the function of bearing the upper load transmitted by the boom pull rope and the balance arm pull rope, and the upper load is directly transmitted to the tower body structure through the rotating tower, the rotating platform, the bearing seat and other structural components. At present most tower cranes are when using, because the machine operation can produce vibrations, consequently, the base of tower crane need install stably, and mounting structure in case unstable can make the tower crane produce the potential safety hazard in the use, endangers staff's safety.
In the prior art, the problems are generally solved by a stable fixing device of a tower crane base, but the stable fixing device is generally used for directly clamping the bottom end of a tower crane so as to fix the tower crane; although this scheme can be stabilized the installation to the tower crane, the defect that this scheme exists lies in, fixing device and tower crane need the one-to-one, and fixing device can not adapt to the tower crane of multiple specification to lead to carrying in step the tower crane and supporting fixing device repeatedly at the building site, increased work load.
Disclosure of Invention
The invention aims to provide a stable fixing device for a base of a large tower crane, which aims to solve the technical problem that in the prior art, fixing devices and tower cranes need to be in one-to-one correspondence, and the fixing devices cannot adapt to tower cranes of various specifications.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a stable fixing device for a base of a large tower crane comprises a fixing base and a base, wherein the fixing base is formed by extending from the bottom end of the tower crane, and the base is used for mounting the fixing base;
the base is longitudinally provided with a mounting groove, the fixing seat is movably nested in the mounting groove, and a disassembly fixing structure used for tightly holding the fixing seat through the expansion or contraction action of the fixing seat or releasing the fixing seat in a sticking way is mounted in the mounting groove.
As a preferable scheme of the present invention, the dismounting fixing structure includes a plurality of expansion components disposed in the mounting grooves, and a rigid component for being clamped on a corresponding side wall of the fixing seat is disposed at one end of the expansion components close to the fixing seat;
the expansion assembly drives the rigid assembly to linearly slide and lock on the fixed seats with different specifications through the expansion or contraction action of the expansion assembly.
As a preferable mode of the present invention, the expansion assembly includes four elastic air bags, one end of each of the elastic air bags is fixedly connected to the corresponding side wall of the mounting groove, and the other end of each of the elastic air bags linearly moves parallel to the corresponding side wall.
As a preferable scheme of the present invention, the rigid assembly includes four attaching plate bodies respectively disposed on four sides of the rectangle, the attaching plate bodies are connected to the moving end of the elastic airbag through a rigid plate and move in parallel with the moving end of the elastic airbag, and the attaching plate bodies linearly move along their extending directions to make the inner ends of the attaching plate bodies abut against the sidewalls of the adjacent attaching plate bodies so as to connect the four attaching plate bodies to each other and form a rectangular space in the center of the four attaching plate bodies for attaching to the fixing base.
In a preferred embodiment of the present invention, one end of a guide member for limiting the expansion and contraction direction of the elastic air bag is fixedly mounted to one end of the rigid plate near the elastic air bag, and the other end of the guide member is mounted to the mounting groove via a torsion force reducing member.
As a preferable scheme of the present invention, the guiding assembly includes a plurality of sliding cylinder bodies linearly slidably connected to each other and all sleeved on the elastic air bag, and the sliding cylinder body near one end of the mounting groove is connected to the torsion reducing assembly through a sealing plate, the moving end of the elastic air bag is fixedly mounted on the sealing plate, and the sliding cylinder body at the other end is fixedly connected to the rigid plate;
the shrouding through many circumference evenly distributed's sharp slide bar with the rigid plate is connected, just equidistant fixed cover is equipped with a plurality of guide rings on the elastic airbag, the guide ring is located through a plurality of slide cartridge one-to-one slip cap the sharp slide bar, just be provided with on the sharp slide bar and be used for the restriction slide cartridge straight line sliding distance just makes each but the stopper that the sliding distance of slide cartridge equals.
As a preferable embodiment of the present invention, the attaching plate is linearly slidably mounted on the rigid plate through a sliding groove, the bottom end of the sliding groove is not lower than the bottom end of the attaching plate, an attaching air cavity is formed in the attaching plate, a sliding seal connector capable of linearly sliding in a sealing manner along the extending direction of the attaching plate is disposed on the attaching plate, an isolation plate for isolating the attaching air cavity into two parts is slidably nested in the attaching air cavity, the isolation plate is fixedly connected to the slider body through the center of the sliding seal connector, an air inlet elastic tube is disposed in the slider body, one end of the air inlet elastic tube is communicated with one part of the attaching air cavity, the other end of the air inlet elastic tube is communicated with the elastic airbag, and a second air inlet elastic tube for automatically opening when the air pressure near the elastic airbag reaches a certain value is mounted in the air inlet elastic tube A pressure relief valve.
As a preferred scheme of the invention, the other part of the joint air cavity is provided with a vent hole communicated with the outside atmosphere;
a locking air cavity is further formed in the attaching plate body, the locking air cavity is communicated with the attaching air cavity through a communicating channel, and a second pressure release valve is installed in the communicating channel;
the locking air cavity is internally provided with a locking body which automatically slides out when the air pressure in the locking air cavity reaches a certain value, the attaching plate body is provided with a sealing and sliding hole which is used for sealing and nesting the locking body in a linear sliding manner, and the fixed seat is provided with a groove which is used for nesting the locking body.
As a preferred scheme of the invention, the locking air cavity and the attaching air cavity are both connected with the same electric control valve through connecting pipes.
As a preferable scheme of the present invention, the torsion-reducing force assembly includes four arc-shaped grooves formed in the side walls of the sliding grooves, sliding seal paddles are slidably mounted in the arc-shaped grooves, an elastic return cavity is formed between each of two ends of each sliding seal paddle and the arc-shaped groove, and the sliding seal paddles are fixedly connected to the sealing plate.
Compared with the prior art, the invention has the following beneficial effects:
according to the tower crane fixing seat and the tower crane fixing seat mounting method, the base with larger size and the mounting groove are preset, so that a gap exists between the tower crane fixing seat to be mounted and the mounting groove, the tower crane with larger size can be adapted through the gap, the tower crane is locked through expansion of the dismounting fixing structure, the scheme is that only the dismounting fixing structure is required to be contracted to the original state when the locking of the tower crane is released through a special locking mode of the dismounting fixing structure, and the scheme has the characteristic of convenience in dismounting and mounting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a top view of an overall structure in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a sliding seal connection according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an elastic airbag according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a fixed seat; 2-a base; 3, installing a groove; 4-disassembling the fixed structure;
41-elastic air bag; 42-attaching the plate body; 43-a rigid plate; 44-a guide assembly; 45-torque force reduction assembly; 46-a sliding groove; 47-fitting air cavity; 48-sliding sealing connection; 49-insulating board; 410-an air intake elastic tube; 411 — first pressure relief valve; 412-a vent; 413-locking air cavity; 414-connecting channel; 415-a locking body; 416-a second pressure relief valve;
441-sliding cylinder body; 442-closing the plate; 443-a linear slide bar; 444-a guide ring; 445-a slide; 446-a limiting block;
451-arc-shaped grooves; 452-sliding sealing paddles; 453-elastic reset chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the invention provides a stable fixing device for a base of a large tower crane, which comprises a fixing base 1 and a base 2, wherein the fixing base 1 extends from the bottom end of the tower crane, and the base 2 is used for mounting the fixing base 1; the base 2 is longitudinally provided with a mounting groove 3, the fixing seat 1 is movably embedded in the mounting groove 3, and a dismounting and fixing structure 4 used for tightly attaching the fixing seat 1 or keeping away from and releasing the fixing seat 1 through self expansion or contraction is arranged in the mounting groove 3.
According to the tower crane fixing seat, the base 2 and the mounting groove 3 with larger sizes are preset, so that a gap exists between the tower crane fixing seat 1 to be mounted and the mounting groove 3, the tower crane with larger sizes can be adapted to the tower cranes with larger sizes through the gap, the tower crane is locked through expansion of the dismounting fixing structure 4, the scheme only needs to dismount the fixing structure 4 to contract to the original state when the locking of the tower crane is released through a special locking mode of the dismounting fixing structure 4, and the scheme has the characteristic of convenience in dismounting and mounting.
The dismounting and fixing structure 4 comprises a plurality of expansion components arranged in the mounting groove 3, and a rigid component used for being clamped on the corresponding side wall of the fixing seat 1 is arranged at one end, close to the fixing seat 1, of each expansion component; the expansion component drives the rigid component to linearly slide and lock on the fixed seats 1 with different specifications through the expansion or contraction action of the expansion component.
Carry on spacingly through the rigidity subassembly to expansion assembly, drive rigidity subassembly through expansion and contraction characteristic of expansion assembly self.
Wherein, the expansion assembly comprises four elastic airbags 41, one end of each elastic airbag 41 is fixedly connected to the corresponding side wall of the mounting groove 3, and the other end of each elastic airbag 41 linearly moves parallel to the corresponding side wall.
Because the tower crane is basically a rectangular steel frame structure, four surfaces of the tower crane are attached by four elastic air bags 41 in the embodiment; of course, the cross-sectional view of the tower crane does not increase one side, and the number of the elastic air bags 41 is increased by one correspondingly.
The rigid assembly comprises four attaching plate bodies 42 which are respectively arranged on four sides of the rectangle, the attaching plate bodies 42 are connected with the moving ends of the elastic air bags 41 through rigid plates 43 and move along with the moving ends of the elastic air bags 41 in parallel, the attaching plate bodies 42 enable the inner ends of the attaching plate bodies 42 to abut against the side walls of the attaching plate bodies 42 to enable the four attaching plate bodies 42 to be connected with each other and form a rectangular space for attaching to the fixing seat 1 at the center of the four attaching plate bodies 42 through linear movement along the extending direction of the attaching plate bodies 42.
The distance between the jointing plate body 42 and the central point of the substrate 2 is adjusted through the telescopic movement of the elastic air bag 41, which is equivalent to the specific position of each side of the rectangle constructed and jointed on the fixed seat 1 in the later period; since the portion of each bonding plate 42 for constructing a rectangle cannot be completely formed into a rectangle in this process, the sliding of the bonding plates 42 is required to make the bonding plates 42 interfere with each other.
Wherein one end of a guide assembly 44 for limiting the expansion and contraction direction of the elastic air bag 41 is fixedly installed at one end of the rigid plate 43 near the elastic air bag 41, and the other end of the guide assembly 44 is installed on the installation groove 3 through a torsion force reducing assembly 45.
The expansion and contraction of the elastic bladder 41 is controlled by the guide assembly 44 to ensure the parallel movement of the attaching plate body 42 and to prevent the elastic bladder 41 from being excessively expanded and damaged.
The guiding assembly 44 includes a plurality of sliding cylinder bodies 441 mutually linearly and slidably connected and all sleeved on the elastic air bag 41, the sliding cylinder body 441 at one end near the installation groove 3 is connected to the torsion force reducing assembly 45 through a sealing plate 442, the moving end of the elastic air bag 41 is fixedly installed on the sealing plate 442, and the sliding cylinder body 441 at the other end is fixedly connected to the rigid plate 43; the sealing plate 442 is connected to the rigid plate 43 through a plurality of linear sliding rods 443 uniformly distributed in the circumferential direction, a plurality of guide rings 444 are fixedly sleeved on the elastic airbag 41 at equal intervals, the guide rings 444 are slidably sleeved on the linear sliding rods 443 one by one through a plurality of sliding cylinders 445, and the linear sliding rods 443 are provided with limit blocks 446 for limiting the linear sliding distance of the sliding cylinders 445 and enabling the slidable distance of each sliding cylinder 445 to be equal.
The sliding cylinders 441 are pushed to slide relative to each other by the elastic air bag 41 so as to limit the parallel movement of the joint plate body 42, and the elastic air bag 41 is wrapped by the sliding cylinders 441 so as to prevent the elastic air bag 41 from excessively deforming in the radial direction, thereby causing damage to the elastic air bag 41.
The elastic airbag 41 is restrained by the guide ring 444, which means that the elastic airbag 41 is uniformly divided into a plurality of parts by the guide ring 444, and the maximum expansion amount of each part is controlled by restricting the sliding of the guide ring 444, so that the part of the elastic airbag 41 is prevented from being over-expanded, and the guide ring 444 can restrain the upper and lower end surfaces of the elastic airbag 41 and prevent the elastic airbag 41 from being stuck in the sliding gap between the sliding cylinder bodies 441 when the elastic airbag is expanded.
Wherein, the attaching plate body 42 is linearly slidably mounted on the rigid plate 43 through a sliding groove 46, the bottom end of the sliding groove 46 is not lower than the bottom end of the attaching plate body 42, an attaching air cavity 47 is arranged in the attaching plate body 42, a sliding sealing connecting piece 48 which can be hermetically and linearly slid along the extending direction of the attaching plate body 42 is arranged on the attaching plate body 42, an isolating plate 49 which is used for isolating the attaching air cavity 47 into two parts is slidably nested in the attaching air cavity 47, the isolating plate 49 is fixedly connected to the sliding cylinder body 441 by penetrating through the center of the sliding sealing connecting piece 48, an air inlet elastic tube 410 is arranged in the sliding cylinder body 441, one end of the air inlet elastic tube 410 is communicated with one part of the attaching air cavity 47, and the other end of the air inlet elastic tube 410 is communicated with the elastic air bag 41, a first relief valve 411 is installed in the intake elastic tube 410 to be automatically opened when the air pressure reaches a predetermined value near the elastic bag 41.
Because when the component is attached to the required rectangle of the fixed seat 1, three steps are needed:
firstly, determining the positions of four sides of a required rectangle;
secondly, extending each side to ensure that a rectangle is formed inside;
and thirdly, locking each side with the fixed seat 1.
Therefore, in the present invention, a pneumatic scheme is adopted, the attaching plate 42 is automatically attached to the fixing base 1 by the expansion of the elastic air bag 41, and when the attaching plate 42 is automatically attached to the fixing base 1, even if the air pressure in the elastic air bag 41 changes, the attaching plate 42 cannot move, and at this time, the first critical value is reached in the elastic air bag 41, the opening of the first pressure release valve 411 is triggered, so that the pressure in the elastic air bag 41 is maintained unchanged and the pressure in the attaching air cavity 47 is gradually increased.
In fig. 2, when the air pressure on the right side of the attaching air chamber 47 is gradually increased, since the position of the insulating plate 49 is fixed, the attaching plate body 4 must be moved to the right side to increase the volume of the right portion of the attaching air chamber 47, so that the attaching plate body 42 is automatically driven by the air pressure to perform the splicing of the rectangular sides.
Wherein, the other part of the joint air cavity 47 is provided with a vent hole 412 communicated with the outside atmosphere; a locking air cavity 413 is further formed in the attaching plate body 42, the locking air cavity 413 is communicated with the attaching air cavity 47 through a communication channel 414, and a second pressure relief valve 416 is installed in the communication channel 414; a locking body 415 which is used for automatically sliding out when the air pressure in the locking air cavity 413 reaches a certain value is arranged in the locking air cavity 413, a sealing and sliding hole which is used for sealing and nesting the locking body 415 in a linear sliding manner is formed in the attaching plate body 42, and a groove which is used for nesting the locking body 415 is formed in the fixed seat 1. The locking air cavity 413 and the attaching air cavity 47 are both connected with the same electric control valve through connecting pipes.
When the air pressure in the attaching air cavity 47 reaches the second critical value, the attaching plate bodies 42 are mutually abutted and cannot move, the second pressure release valve 416 is started to inflate the locking air cavity 413, when the locking air cavity 413 is inflated, the fixing seat 1 is locked through the locking body 415, and the distance between the outer end of the attaching plate body 42 and the fixing seat 1 needs to be changed frequently, so that the locking body 415 is aligned with the fixing seat 1 by taking the inner end of the attaching plate body 42 as a reference.
The torsion-reducing force assembly 45 includes four arc-shaped grooves 451 formed in the side walls of the sliding groove 46, sliding seal paddles 452 are slidably mounted on the arc-shaped grooves 451, an elastic return cavity 453 is formed between each of two ends of each of the sliding seal paddles 452 and the arc-shaped groove 451, and the sliding seal paddles 452 are fixedly connected to the sealing plate 442.
Because this scheme is for the inseparable mechanical locking structure to fixing base 1, because the top of tower crane need rotate, and the top of tower crane need form a torsional internal force in the inside of whole device, needs base 2 to provide an opposite torsional force and offsets, and this device mechanical locking structure is comparatively inseparable, under this torsional force for a long time, can lead to mechanical structure's harm.
Therefore, in the present invention, the sliding connection of the sliding seal paddle 452 in the arc-shaped groove 451 replaces the rigid connection in the prior art, the elastic reset cavities 453 at the two sides of the sliding seal paddle 452 absorb the twisting force, and then the position of the sliding seal paddle 452 is restored through the elastic reset cavities 453, and only the elastic reset cavity 453 needs to be replaced at the later stage when the service life of the elastic reset cavity 453 is over.
The elastic restoring chamber 453 is only one chamber having elastic absorption and restoration functions in the present embodiment, and unlike the conventional chamber, it may be formed of an elastic material such as rubber, or may be formed by sealing the chamber and filling air into the sealed chamber.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (5)
1. The utility model provides a stable fixing device of large-scale tower crane base which characterized in that: the tower crane fixing device comprises a fixing seat (1) formed by extending from the bottom end of a tower crane and a base (2) used for installing the fixing seat (1);
the base (2) is longitudinally provided with a mounting groove (3), the fixing seat (1) is movably nested in the mounting groove (3), a dismounting and fixing structure (4) for attaching and tightly holding the fixing seat (1) or releasing the fixing seat (1) in a way of keeping away from the fixing seat (1) through self expansion or contraction action is arranged in the mounting groove (3),
the disassembly fixing structure (4) comprises a plurality of expansion components arranged in the installation groove (3), and a rigid component used for being clamped on the corresponding side wall of the fixing seat (1) is arranged at one end, close to the fixing seat (1), of each expansion component;
the expansion component drives the rigid component to linearly slide and lock on the fixed seats (1) with different specifications through the expansion or contraction action of the expansion component,
the expansion assembly comprises four elastic air bags (41), one end of each elastic air bag (41) is fixedly connected to the corresponding side wall of the corresponding mounting groove (3), the other end of each elastic air bag (41) linearly moves parallel to the corresponding side wall,
the rigid assembly comprises four attaching plate bodies (42) which are respectively arranged on four sides of the rectangle, the attaching plate bodies (42) are connected to the moving end of the elastic air bag (41) through rigid plates (43) and move in parallel along with the moving end of the elastic air bag (41), the attaching plate bodies (42) enable the inner ends of the attaching plate bodies (42) to be abutted against the side walls of the adjacent attaching plate bodies (42) through linear movement along the extending direction of the attaching plate bodies (42) so that the four attaching plate bodies (42) are mutually connected and a rectangular space for attaching to the fixed seat (1) is formed in the centers of the four attaching plate bodies,
one end of a guide assembly (44) for limiting the expansion and contraction directions of the elastic air bag (41) is fixedly arranged at one end of the rigid plate (43) close to the elastic air bag (41), the other end of the guide assembly (44) is arranged on the mounting groove (3) through a torsion force reducing assembly (45),
the guide assembly (44) comprises a plurality of sliding cylinder bodies (441) which are mutually linearly and slidably connected and are all sleeved on the elastic air bag (41), the sliding cylinder body (441) close to one end of the mounting groove (3) is connected to the torsion reducing assembly (45) through a sealing plate (442), the moving end of the elastic air bag (41) is fixedly mounted on the sealing plate (442), and the sliding cylinder body (441) positioned at the other end is fixedly connected to the rigid plate (43);
the sealing plate (442) is connected with the rigid plate (43) through a plurality of linear sliding rods (443) which are uniformly distributed in the circumferential direction, a plurality of guide rings (444) are fixedly sleeved on the elastic air bag (41) at equal intervals, the guide rings (444) are slidably sleeved on the linear sliding rods (443) in a one-to-one correspondence manner through a plurality of sliding cylinders (445), and the linear sliding rods (443) are provided with limit blocks (446) which are used for limiting the linear sliding distance of the sliding cylinders (445) and enabling the slidable distance of each sliding cylinder (445) to be equal.
2. The stable fixing device of large-scale tower crane base according to claim 1, characterized in that: the laminating plate body (42) is linearly slidably mounted on the rigid plate (43) through a sliding groove (46), the bottom end of the sliding groove (46) is not lower than the bottom end of the laminating plate body (42), a laminating air cavity (47) is formed in the laminating plate body (42), a sliding sealing connecting piece (48) capable of hermetically and linearly sliding along the extending direction of the laminating plate body (42) is arranged on the laminating plate body (42), an isolating plate (49) used for isolating the laminating air cavity (47) into two parts is slidably nested in the laminating air cavity (47), the isolating plate (49) fixedly penetrates through the center of the sliding sealing connecting piece (48) and is fixedly connected to the sliding cylinder body (441), an air inlet elastic pipe (410) is arranged in the sliding cylinder body (441), and one end of the air inlet elastic pipe (410) is communicated with one part of the laminating air cavity (47), the other end of the air inlet elastic tube (410) is communicated with the elastic air bag (41), and a first pressure release valve (411) which is automatically opened when the air pressure close to one side of the elastic air bag (41) reaches a certain value is installed in the air inlet elastic tube (410).
3. The stable fixing device of large-scale tower crane base according to claim 2, characterized in that: the other part of the joint air cavity (47) is provided with a vent hole (412) communicated with the outside atmosphere;
a locking air cavity (413) is further formed in the attaching plate body (42), the locking air cavity (413) is communicated with the attaching air cavity (47) through a communicating channel (414), and a second pressure release valve (416) is installed in the communicating channel (414);
a locking body (415) which is used for automatically sliding out when the air pressure in the locking air cavity (413) reaches a certain value is arranged in the locking air cavity (413), a sealing and sliding hole which is used for sealing and nesting the locking body (415) in a linear sliding manner is formed in the attaching plate body (42), and a groove which is used for nesting the locking body (415) is formed in the fixed seat (1).
4. The stable fixing device of large-scale tower crane base according to claim 3, characterized in that: the locking air cavity (413) and the attaching air cavity (47) are connected with the same electric control valve through connecting pipes.
5. The stable fixing device of large-scale tower crane base according to claim 4, characterized in that: the torsion reducing force assembly (45) comprises four arc-shaped grooves (451) formed in the side walls of the sliding grooves (46), sliding sealing paddles (452) are installed on the arc-shaped grooves (451) in a sliding mode, elastic reset cavities (453) are formed between the two ends of each sliding sealing paddle (452) and the arc-shaped grooves (451), and the sliding sealing paddles (452) are fixedly connected with the sealing plate (442).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512849.7A CN113233347B (en) | 2021-05-11 | 2021-05-11 | Stable fixing device of large tower crane base |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512849.7A CN113233347B (en) | 2021-05-11 | 2021-05-11 | Stable fixing device of large tower crane base |
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| CN113233347A CN113233347A (en) | 2021-08-10 |
| CN113233347B true CN113233347B (en) | 2022-08-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3111454U (en) * | 2005-03-16 | 2005-07-28 | 株式会社昭和 | Pile mounting device for tower crane base frame |
| CN206667288U (en) * | 2017-03-01 | 2017-11-24 | 南通庞源机械工程有限公司 | A kind of general column foot cross-based plinth |
| CN106826299B (en) * | 2017-04-10 | 2022-09-27 | 江南大学 | Abrasive water jet is thrown and is bored and mill integrative clamping jig |
| CN210457245U (en) * | 2019-08-02 | 2020-05-05 | 天津天安机电设备安装工程有限公司 | Tower crane with assembled tower crane foundation |
| CN210976662U (en) * | 2019-10-26 | 2020-07-10 | 邯郸市钻岩工程机械有限公司 | Steel-pipe column transfers device that hangs down |
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